snr

A novel ultrasound image segmentation algorithm, which is based on the spectral cluster ensemble, is proposed to segment ultrasound images with low SNR.

为了对低信噪比的超声图像进行有效分割，提出一种谱聚类集成的超声图像分割算法。

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When SNR becomes lower, the performance of traditional detection and estimation methods take a turn for the worse so much as not working. Consequently, it calls for new detection and estimation technology to solve the difficult problem.

直扩信号是宽带微弱信号，常规的检测与参数估计方法在信噪比较低时，性能得不到应有的保证，因此需要寻找新的方法来解决这一难题。

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This paper comparatively analyses Log-MAP and SOVA algorithms by simulation based on their principle, and points out the effect of iterations number, frame size and SNR for the capability of Turbo code.

在研究MAP，Max-Log-MAP，Log-MAP和SOVA算法原理基础上，通过仿真，对Log-MAP和SOVA算法进行了比较性分析，同时指出了迭代次数、帧长和信噪比对Turbo码性能的影响。

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On the acceleration compensation, the thesis analyzes the effects of target's acceleration on several outputs of a linear-phase matched filter based on FFT, such as the output SNR loss and the constraint on optimal accumulative time.

在加速度补偿方面，首先分析了加速度对FFT输出信噪比的损失因子，给出了FFT处理的最佳相参积累时间。

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It affects the SNR signal-to-noise ratio and the THD ( total harmonic distortion ) of a conversion.

它影响转换的SNR( 信噪比)和THD ( 总谐波失真 ).

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In high frequency communication, extremely low SNR communication is an expedient means.

在短波通信中, 极低信噪比条件通信是一种应急通信手段.

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It was the first substantial British exhibition to travel to China since 1949, and not the easiest to arrange, says ho SNR.

何鸿毅说，那是1949年以来英国赴华举办的首次大型艺术展，安排起来可不轻松。

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Finally, the impact of the noise to the algorithm is also been discussed, noting that the algorithm only adapt to the high SNR environment. Finally, we compare the two beamforming techniques, and find each has its advantages.

最后，讨论了噪声对波束形成性能的影响，指出本算法只能适应于信噪比较高的环境。最后，对上述两种波束形成技术进行了比较。

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The experimenting result indicates: the mixture model denoising algorithm using FPGA can improve the SNR of the CMOS imager and the misalignment angle measuring precision of the photoelectric autocollimator.

实验结果证明：FPGA中采用的混合图像去噪算法能提高CMOS图像传感器捕获到图像的信噪比，能提高光电自准直仪的失准角测量精度。

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In the simulation, constellation, Bit-Error-Rate ( BER) and Signal-to-Noise Ratio ( SNR) performance degradation are analyzed taking into account the effect of sampling frequency offset.

经过仿真，从星座图、误码率（Bit-Error-Rate，BER）及信噪比（Signal-to-Noise Ratio，SNR）损失等角度对采样频率偏差的影响做了揭示和验证。

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In focal plane array, SNR is a significant parameter in system design.

在焦平面系统中, 信噪比是设计的一项重要指标.

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Based on the effect of the polarization state of polarized light and the degree of polarization on the second-order correlation function, the influence of light polarization on the visibility and SNR of correlated imaging with thermal light is investigated by use of statistical optics theory.

根据完全偏振光的不同偏振态和部分偏振光的不同偏振度对二阶关联函数的影响，利用统计光学理论研究了光的不同偏振性质对热光关联成像的可见度和信噪比的影响。

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When asked about the link with Bayern Munich, Robben Snr said: Nonsense.

当被问及与拜仁慕尼黑有联系时, 老鲁本说: 一派胡言.

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Results SNR of FLASH-T 1 WI sequences was lower than those of SE-T 1 WI , TSE-T 2 WI ( Ρ < 0.001 )

结果FLASH-T1WI的SNR低于SE-T1WI 、 TSE -T2WI,两者Ρ<0.001.

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The effective detection for small targets in low SNR image is always a hot research field.

低信噪比条件下的小目标检测和跟踪问题一直是热门课题.

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The measurement principle and methods about SNR are emphasized.

着重介绍了信噪比的测试原理及测试方法.

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The software will display the SNR, FWHM and RMS values found.

软件将显示它们的信噪比, 点扩展函数和均方差值.

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Theoretical analysis and simulation results indicate this algorithm's validity, with low SNR and colored noise environment.

理论分析和仿真结果均表明在低信噪比色噪声情况下该算法的有效性.

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There is no figure property to use, and the SNR is very low for point targets in infrared image. According to these properties, the max-medium filter is valued, and an improved small target detection approach, which is called double-gated filter is investigated.

针对红外点目标无形状特征、SNR很低的特点，分析常用的最大中值滤波的优缺点，提出了改进的双门滤波器，并用之来对图像进行目标检测。

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Dalton Bearing Service offers SNR Bearing's full line.

道尔顿轴承服务提供的SNR轴承的全面产品线.

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Dalton Bearing Service is proud to authorized distributor for SNR Bearing.

道尔顿轴承服务感到自豪的是,获授权分销商的SNR轴承.

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Effect of data length and SNR on wind velocity estimation for MF radar

数据长度和信噪比对中频雷达风场计算的影响分析

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Modulated pulsed laser is utilized to produce specific frequency light current imaging but not direct current imaging to enhance the SNR. The special modulation circuit is designed in this thesis. 6.

采用经调制的脉冲激光束产生特定频率的光电流成像而非直流成像技术，进一步提高了图像信噪比，并设计了专用的调制电路。

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Study of small target detection in IR background and low SNR

对红外背景、低信噪比条件下的小目标检测技术研究

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Bandwidth of the sensor is 300 MHz with SNR 50.

该传感器的频带宽度为300MHz,信噪比为50.

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Results Compared to Group SNR, the caspase-3 protein content in group CAF was up to 394 % ±99.4 % ( P & lt; 0.001 )

结果与SNR组比较, CAF组caspase -3 的蛋白含量增加到394%±99.4% ( P & lt; 0.001 ).

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For example, signal-to-noise ( SNR ) performance degrades as a result of reduced signal swing.

例如, 信噪比 ( nr ) 于信号摆幅的减少而降低.

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The relationships between computational method of system SNR and the wrong alarm ratio were analyzed.

分析了系统信噪比的计算方法及其与误报警率的关系.

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In the detecting system of laser illumination and laser guide star ( LGS), the application of optical filter is an important approach to reduce background noise and improve signal-to-noise ratio ( SNR).

在激光照明和激光导星的探测系统中，运用滤光器（片）是抑制背景噪声、提高信噪比的重要途径之一。

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Based on cyclic diagonal codes, an improved design of unitary space-time codes ( USTC) at low SNR is proposed.

在低信噪比情况下，提出了一种基于循环对角码的改进的酉空时码设计。

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